Thought this last night whilst my levels were @12+ due to an incorrect bolus. I know your body tries to get rid of excess glucose through your urine if you are high but does then going for a wee actually reduce your sugars (albeit not much)?
Wouldnt think so. Your kidneys filter blood and as part of the process will extract some excess glucose and spill it into your urine so by the time its in your wee its already been filtered from your blood. I would think drinking more water which would dilute the blood and encourage more filtration and urine production, then the effect would be magnified